A White-crowned Sparrow (Zonotrichia leucophrys) perches in a tree; Astoria, Oregon, United States of America PacificStock
In the Yukon's North country, Tombstone mountain stands out above the tundra and surrrounding landscape; Yukon, Canada PacificStock
Alert Cheetah (Acinonyx jubatus) stalking through open grassland near Ndutu, Ngorongoro Crater Conservation Area; Tanzania PacificStock